Organic phosphate and process of making same



Patented June 4, 1929.

UNITED STATES THEODORE B. WAGNER, OF BROOKLYN, I\1' EW YORK.

ORGANIC PHOSPHATE AND PROCESS OF MAKING SAME.

' No Drawing.

The present invention has for its object the production, from the steepwater of corn, of a therapeutically valuable compound the major portion of which consists of an insol- 5 uble salt of organic phosphoric acid containscribed which yield insoluble. precipitates.

These processes, however, and the products resulting therefrom are different from the process I employ and from the product which I obtain by my process, as will be more .pecifically pointed out in the following description. W v G Extended investigations have shown that the major part of the nitrogen content of steepwater is present in theform of amino acids and, to a much small' ij' iiextent, in the form of coagulated protein arid/or such proteins as are coagulate-d on heating the steepwater. These may be removed, if desired, by filtering the hoti rsteepwater, such filtration being rendered more effective by the addition of a suitable filtering medium, kieselguhr for instance.

The relatively large quantity of phosphoric acid present in the steepwater exists in two forms, namely, as acid salts of phosphoric acid and, preponderantly, as acid salts of organic phosphoric acid. B carrying the addition of lime to the neutra point, or very near to it, all of the organic phosphoric acid is precipitated in the form of insoluble calcium salts, while the amino acids remain in solution. Due to the fact that the calcium salts are those of the least solubility, lime replaces the magnesia, which is naturally present in the steepwater; this magnesia content is easily five times as large as that of the naturally present lime.

When the process of U. S. Patent #914,37 9 is followed which calls for the addition of ammonia in uantities sufficient to render the mixture al aline, lime and magnesia, 'as naturally present in steepwater, enter into the precipitate, in addition to the ammonia itself, producing a compound sharply distinguished from mine.

The process described in U. S. Patent 'tion neutral, or nearly so.

Application filed November 10, 1927. Serial No! 232,471.

#920,108 calls for a partial neutralization of the steepwater and when lime is used as a neutrallzlng agent, which, however, is not mandatory, a precipitate is formed which contains lime and magnesia, but little organic phosphate, the balance remaining in solution as described in the'specification beginning on line #86, page 2.

The difference between this compound and mine becomes obvious when the amounts of lime are considered, which are used in the respective processes. Comparing the amount of lime called for by U. S. Patent #920,108 and the quantity used by me as stated hereinafter, it will be noted that only 26 pounds of lime are used in the former per 1000 pounds of dry substance steepwater, whereas, in my process 60 pounds are used per l000 pounds dry substance steepwater.

I use as my raw material the light or the heavy steepwater, whichever is morereadily available, filter hot, when aiming at freedom from protein, add slaked lime preferably in the form of milk of lime in suflicient quantity to reduce the acidity to zero or nearly so, and then collect, wash. and dry the resulting precipitate. The following is a practical illustration of my preferred procedure:

To obtain about 1000 lbs. of my organic phosphate, I take about 2200 gallons of heavy steepwater usually having a density correspondin to 24"v Beaum, reduce it to 18 Beaum by the addition of water, and then add suflicientlime to'render the solu- Before adding the lime to the steepwater, I work it into a milk by adding water, usually in the ratio of 50 lbs. of lime to 50 gallons of water. I use about 450 lbs. of lime in the treatment of the above mentioned 2200 gallons of-concen-- trated or heavy steepwater. I add the milk of lime gradually and under vigorous agitation of the mixture and exercise particular care in adding the milk of lime the more slowly the more closely the neutral point is approached, testing the batch frequently with litmus paper.

After sufiicient milk of lime has been added to render the mixture neutral or leave it faintly acid, I heat it. to 180 F. under constant agitation and then proceed to collect theprecipitate, preferably in a filter press, to wash it thoroughly with water either in the press or after dropping it into a vat, and

finally to dry it in a suitable apparatus until the moisture .content has been reduced approximately to 10%.

After drying my new compound constitutes a light greyish or White powder, the major portion of-which is an insoluble calcium salt CHOH HOCH CHOH (OH)zP0.0HC

HOCH OHOH (OlTDzIPODHC in which 1. represents inosite,

CHO.PO(OH):

of organic phosphoric acid, and inosite phosphoric acid probably represents the major portion thereof; the relation of the latter to inosite is probably expressed in the following structural formulae:

- (IJHOI'OLOa CHO.PO(OH)2 Ca.POa.OHO CHO.PO:.Ca

i CHO.PO(OH)2 Ca.POa.OHC CHO.POa.Oa ('JHO.PO(OH)2 II. representsjnosite phosphoric acid, and

(iHQPOaCa III. calcium salt of inosite phosphoric acid.

slaked lime and collecting the resultant precipitate.

2. As a new article of manufacture a compound the major portion of which consists 25 of an insoluble lime salt of organic phosphoric acid and which is derived from the ,steepwater of corn by the addition thereto of slaked lime. 1. The process of substantially neutraIiZ- ing steepwater, obtained from corn, with THEODORE B. WAGNER. 

